Check for axminster-loom needle motion



Dec. 6, 1927.-

w. w. ROBERTSON CHECK FOR AXMINSTER LOOM NEEDLE MOTION Filed Nov. so. 1925 4 f WM.

Patented Dec. 6, 1927. y

1,651,549 ATENT OFFICE.

WILLIAM W. ROBERTSON, F YWOIR'CESTER, MASSACHUSETTS, ASSIGNOR TO CROMPTON & KNOWLES LOOM WORKS, l0I" 'WORCESTEIL MASSACHUSETTS, A CORPORATION OF MASSACHIUSETTS; 1

CHECK FOR AXMINSTER-LOOM NEEIILE MOTION.

Application filed November 30, V1925. Serial No. 72,0791.

j vibration of the eye end of theneedle of such looms when running at a relatively high rate ofspeed. i

Axnnnster loomsusually employ aneedle motion at one side of the loom and a selvager Vshuttle motion at the other side,.the lneedle being projected through the yshedand having a recess on thefunder side thereof which should register with ,the reduced end or nose' of the selvage shuttle. VVhenLthe needle comes to rest theshuttle movesfrom one side thereof tothe other to interloop the selvage warp with the filling of ,the needle'and after the shuttle has passed through the filling the L'needle is withdrawn. As heretofore operated theneedles have been able Vto register properly with the. selvage shuttle but attempts to operate looms of this type at a higher rate of speed have been found `to cause vibration of the eye end of the needle to such an objectionable degree'that the shuttle nose does not always pass through the looped filling. VThis is because ofthe fact that the needle moves transversely away from the path of movement of the shuttle.-

It is animportant feature of myinvent-ion to provide devices adjacent the shuttle motion to engageand restrain undue vibration of the needle yto the end that the shuttle may alwayspass through the loop of lilling. It is a further and more particular object of my invention to provide the shuttle actuator of the selvage shuttle motion with a slightly flexible shield or guard which is brought into position to resist movement of the `needle away from the pathr of the Vshuttle, the shield or guard being moved out of position when not needed, thus rendering unnecessar-y any change in theytype of shutt'le actuator at present in use.

It is a further object of lmy vinvention to provide a checking :device for the'eye' vend l Aof the needle so constructed that a portion CII thereofk is fixed and-,immovable while another portion thereof is slightly yieldable andv placed so as to form with the first portion a socket or pocket for receiving the eye yend of the needlel l e n i Vithf these and otherl objects in view which will appear as .the'description proceeds, my

` invention resides inthe .combination and arrangement of parts hereinafter .described and set forth in the claims.

In the accompanying drawingswherein vI have shown a convenient embodiment of my invention, l

Fig. 1 is a top plan view of a selvage shuttile motion and adjacent parts showing the :needlev at theextrene end of its'weft laying stroke andwith the shuttle partly moved through the loop of filling laidr by the needle,

Fig. 2 is a vertical section on line 2-2 of Fig. 1, and 7 i Fig. 3 isa detail vertical sectionl on line e-e 0f Fig. 2. i

Referring to thel drawings itiwill be seen vthat I have provided a bracket-10 secured to vwhich have operative contactfwith the kopposite. ends of the se'lvage thread shuttle S. The shelf 12 has bolted thereto a stand 22 to which is secured a shuttle race 23 arcuate in form and provided with Yllanges2l andy 25v as shown in Figs. land 2. VA thread.

guide 26 fissecured to the flange 24'fandis provided with, an opening 27 through which the kneedle N'Inay extend as shown in Fig. 2.

y Shaft 13 has secured thereto an operating arm 28pivotally connected to al rod 29 which is reciprocated in timed relation with .the needle motion so astoy move the shuttle actus ator 18 and the shuttle S from the right hand end of the race 23 tothe left hand end as the needle N is inthe position shown in Fig. 1. This movement interlaces selvage thread T deliveredy by the'shuttle S with thefweft W laid by the/needle,` the. weft passing through the neye, Iof the. needle as shown in Fig. 2. The lower strand ofthe weftlVV extends under the needle so' that the nose 30 of the shuttle which passes througha recess 31 formed in the under side of theneedle will pass over said'lower 'stra-nd. In this way the selvage thread and theweft are lOO interloopetl vto hold the Welt as the needle i5 withdrawn to the riglitflroiii the position shown in Fig'. 2. The matte-r thnssiar degrerihei'l .is otroiiinion i'olistriietii'iii and torina no part ot my present invention." i

As previously stated when wide .i'txiiiiie ster looms are operated at a higher `raie ol speed than has prevailed heretofore `it ia 'loiind that the eye endet the needle vila-atea to siieh an extent that the notie 30 ol the shuttle cannot aliviiyspass over the lower xtrend ot the vve'ft `because `ofthe tart that the needleis above ite proper ".poeitioii. ln order to Jrevent this` `objeet'ioiial)leimpiopH er placing ot thefiieedle l have provided a holder 40 secured to the stand 22 as shown in Fig. and havine'an upper siihetantially horizontal portion il to which ie bolted or otherwise secin'eda liloelt `4Q pi'eterahig' ot `t'ibre in `thenpper fare of `Wliit'h torined a groove 43.` Said groove han the lower tare thereof inclined to receive the lower :tare ot the needleend the `eide :walls ot the Lefroove 43 serve to prevent iindiie sideiviee movement of the needle in a" plane parallel to the inoveinento` the shuttle. `It is 'foiiiidthat the block 42 does not prevent all ot the vibration of theneedle andlghave "found it desiralile `tolemploy a shield or guard "44e `eeeiireil to the shuttle actuator 1811s Shown in Final and 2. Said guard has` a broadenedneedle engaging end 41.5 with the under tiene Slightly inclined asshown in 2 and positioned when the shuttle S fie at` the extreme rieht `hand end of the shuttle raoeto leover the *groove 43 andiforni `withtlie latter a Socket `or pocket;which` the advancingr end ol the needle `enterefas the latter nears the end et i "its weft laying stroke. `Said Shield or ,eglirn'i'l tl is preferably `t'oinied et sheet Steel so ae to `be slightly resilient to alieni-h thefshoelc ot `the advancing needle.` f i Inoperation the block t2 reiiiains` at reet and the guard lat inovesavith theshiittle aetiiatoi' `inovinirover the liloelt :it the `time the needle enters` the notch oi thefhloelt to i prevent upward movement theme-tand inov.

ingr .ont of position after the needle has hren brought torest. lt `will he Seen hy re Ferrini; to Fig. l thatthe lnoadened endlfi is faillieientlfir wide `to extend over tlieneedle dniing the tiine that the noeo ot the shiittle ie' passing onder the d needle. thee insuring proper `positioning;r `of the latter :itthe hegimiing` of the stroke of the Slnittlei. The lolocltfl!` may he renewed as occasion re- `(iiires andftliis is alsotriie ot the Shield del.

lliile `I have Shown the Shield `or guard as i `heilig movable with the Shuttle `eetnator vet Idonotivish to helieldtoitliie eontriietion. Froinwthe foregoing it "ivillhe seen that I i have provideda eiinple ineane torprevent- `ing;` undesirable viliratory motion o't the treft needle trensverse to the liked `pathfin which "the eelvage shiittle inove',l thiie e'aiifsing; the

`the lpath ol the ne( o ve end ot the needle andthe Filling Carried thereby to he properly positioned vwith reepeet tothe selvage shuttle. lt will tiii'ther he seen that/the Shield or `igual-d is in the torni ol al llexihle iiie'iiilirr `conveniently mounted on and niovahle 'with the Shuttle actuator eo as to he iiiored into operative position `when defiii'ed withouteontlrling;

with the n'ioveineiitot the ehiittle actuator. lt will further he seen that the Socket. on pocket for ii-ieeiving the `end ol the needle iifoinied `nvitli tivo parts one `ol Wliieli is relitti ely fixed and the other ot" which is vieldahle to absorb the siliiielee't the adrane ingt needlel Having thus deiserihed "ily invention it/ will he apparent that Changes and inodilitiif tions may he inadetlilei'ein hy those akilledg in theeitavithoiit departing1 rlroin the spirit and seope ot the iiiventiomendl dofiiotl `Wish tobe limited to "t ie detailshereindiss- Closed lout what Iielaini is:

[ill

l.` Iniin AXniii'ister looin, a `weft needle havinga weft `insertingniovemenq` a hiittle torthe selvagge thread, means toinove Said ill) Shuttle troni one side `to the `other Side ot"` the path ot the needle `#vlieii the latte/i is at the end of its Wett insertmgr` n'ioveinent,

anda guard carried hy said ineens and po aitioned to engage andpreventvibration ot the needle ae the stroke."` l p d p fln" an iixniiiieter looin, a we having a Wett liziyiiiefStrokeJ a Shiitt ineiiine to nieve the shuttle .".tiroin one side to the other `side oil the path ol the needle ivhrn the latter at thee/nd "o'lffit/S Wett laying latter neare` the end ot "need le leo the ineanS "and positioned when the Shuttle is at the beginning ol its operative more nient lwith respect; tothe needle to engage the latter and `prevent lateral vibration thereof.

l. lniin Axininster leoni, a `weltf needle having a, `ii'et't` insertingr stroke, a Shuttle `toi" the selvagge threail, n'ieaiieto move the Selvage lofi shuttle trein one side to the other side of y the end ol? its welt itifjoke to engage the "needle and prevent lateral vibration thereof,

nieniher having' an openingtherein to reeeive a, portion ot theneedle, land aseeoiid ineniher seeiired to and inovable with the dle `when tliefilattelr at` inserting Stroke.alyieldf ing; `L riiardmnioiinted on and inoviiig with the menne andipositioned` `when the shuttle is "at llff AbA

Cil

means into proximity with respect t0 the first namedk member to form therewith a pocket to receive the needle and prevent lateral vibration thereof, to the endV that .said needle may be properly positioned with respect to the shuttle as the latter is moved by the means. Y

5. In an Axminster loom, a lweft needle having a weft inserting movement, a shuttle movable from one side to the other side of the path of the needle when the latter has reached the end of its weft inserting stroke, and means defining a pocket toreceive the advancing end of the needle and Vprevent lat-eral vibration thereof, said means including a pair of members one ofWhich is relatively immovable and the other of which is slightly resilient, said members engaging oppoiste sides of the needle.

6. In an vAxminster loom, a weft needle having a `weft inserting stroke, a shuttle foi` the selvage thread, a shuttle actuator to move said shuttle from one side of the needle to the other side thereof, and a guard secured to and moving With the actuating means and extending over the kneedle When the latter completes its'vveft ins-ertingstrole, said guard being sufeiently broad to overlie the needle at the beginning of the stroke of the shuttle to prevent displacement ofthe needle transversely of the path'of the shuttle until after the advancing end of the shuttle has passed from one side to the other side of the needle.

In testimony'whereof I have hereunto affixed my signature.

WILLIAM W. ROBERTSON. 

